Duplication verification apparatus



March 23, 1943. w. J: A. BAILEY ETAL ,3 9

DUPLICATION VERIFICATION APPARATUS Filed July 25, 1942 INVENTORS:

Waillz'a mJJiBa 51:37,

We Pa nads'szdz BY 9dATTORNEY verify information recorded on a tape,

.dergoing verification out verification taking Patented no. 23, 1943 UNITED STATES PATENT orr cs v I I nurmca'rion $22101 arranarcs I William J. A.

New York, N. Y.,

Bailey, Packanack Lake, N.

a, N. Y., assignors Machines Corporation, 1 a corporation of New York 1., and

to In- Application July 23, 1942, Serial No. 452,096

13 Claims. (CL 164-115) v, 1

The present invention relates to an apparatus for verifying perforated tape in which the perforations are arranged according to a selected code. According to the present invention, in the course of verification, an unperforated tape is perforated by the apparatus in such a manner that only correct or verified characters are obtained. Upon completion of the process, the originaltape, i. e.'the tape which has been sensed, may be discarded and the newly perforated tape containing only verified data preserved.

It is an object of the invention, therefore, to while at the same time reproducing or duplicating this ape.

cation or the tape being prepared may be advanced or spaced, either separately or in unison,

press'able keys, together with means whereby if a particular character'existing on the tape unis not identical with the key which is depressed on the ,keybord; the means for advancing the tape will become inefiective, or, in other words, the keyboard will become locked until such time as provision is made for correcting the information either on the verifying tape or on the duplicated tape, as the case may be. v

Y Yet another object of the invention is to providea means whereby should a character existving n the tape being verified not correspond with the particular key depressed, the character will not become perforated on the duplicated tape and this latter tape will not be advanced.

A further object in an apparatus of this character is to" provide a means whereby a blank space on the tape being verified will 'be visibly or audibly indicated, as, for example, by the lighting of a lamp, the ringing of a bell, or the like.

An additional object of the invention is ,to provide a means whereby the perforating mechanism may be actuated from the keyboard withplace, in order that the tape which is duplicated may be perforated to correct any error that may exist on the tape being verified.

, invention is to provide a verifying apparatus utilizing a series of de- Another object of the invention is to provide means wherebyeither the tape undergoing verifitape may be verified without duplicating the same.

With these and other objects in view, which will become more readily apparent as the nature of the invention is better understood, the

same consists in a. novel construction, combination and arrangement of parts shown in the accompanying single sheet of drawings.

The figure is a schematic, diagrammatic view of the apparatus showing the circuit connections therefor.

Brief description Briefly, the invention contemplates the provision of a sensing apparatus, through which an initial record media produced from original rec- 0rd data and preferably in the form of a tape which is perforated according to a selected code.

is periodically advanced. A perforating mechanism, including a series of magnet-controlled punches, is provided for the purpose of receiv ing therein a second tape, which is adapted to be perforated in the verified form according to the same code. The magnets of the-perforating mechanism are adapted to be selectively controlled from a coding device and are suitably connected thereto by means of electrical circuits. The coding device. is, in turn, controlled from keyboard. The magnets of the perforating, mechanism are possessed of a common or return line, preferably leading to ground, and a circuit making and breaking apadapted to open paratus-is arranged in series in the return line' leading from the magnets and operates under i the Joint'control of the sensing mechanism and the keyboard to establish the return circuit for the magnets when a character undergoing sensing on the first tape agrees with a particular key which is depressed at the keyboard. Conversely, the circuit making and breaking mechanism is I the common various perforating magnets when a key is depressed which does not agree with a character Whileany'suitable code system may be em:

, ployed in connection with the present invention,

It is also an additional object ofthe" inventhe same has been illustrated in connection with the Telelector code, which utilizes a four-line system of coding. Accordingly, the tape perforating mechanism employed in connection with the present invention includes four punch driving magnets for operating the "character forming punches. Two additional punch magnets are employed, one for advancing the tape' through the perforating mechanism and the return line for the other for forming the usual center drive hole perforations in the tape. The tape perforating mechanism is operatively and electrically connected to a coding device and this latter device employs ten circuit closing magnets, each representative of one digit in the Arabic system for closing coding circuits leading to the four perforating magnets. An additional magnet is provided in the coding device for closing circuits leading to the tape advancing and center drive hole forming magnets in the perforating mechbreaking device, the function of which is to openor close the common return or ground connections for all of the magnets existing in the perforating and sensing mechanisms. Obviously, if the return lead for the magnets of the perforating mechanism is open, no perforating or tape advancing operations may be performed,

while if it is closed the perforating mechanism will operate directly under the control of the coding mechanism, which is, in turn, controlled by means of the keyboard. The .arrangement of the circuit maker and breaker device is such that'if a particular character at an index point position on the tape undergoing verification does not agree with the key which'is depressed at the keyboard, either by virtue of an error existing in the original record data or by an "error on the part of the operator of the keyboard, the common return lines from the magnets of the perforating, and sensing mechanisms will remain or become open, while at the same time provision is made for locking the keyboard so that no additional keys may be depressed. Provision is also made'whereby if at the sensing mechanism an index point position is encountered wherein the tape is not perforated. while at the'same time a key other than the spacing key is. depressed at the keyboard, in addition to the circuit breaking and keyboard locking operations above referred to, a colored light will become visible to the operator.

-to actuate the perforating magnets.

' Additionally, means are provided whereby sign. This sensing mechanism includes the usual series of sensing brushes l2 and a common contact bar It therebeneath. Step-by-step' movement of the tape T which, as stated above, is perforated according to the selected code, and which is produced from original record data, is effected by means of a ratchet controlled tape driving drum It. The ratchet mechanism II is controlled by means of a magnet DM having a common return line b.

' Inasmuch as the selected code system utilizes four longitudinally extending lines for the code perforations, a corresponding number of sensing brushes l2 are employed. The various sensing brushes are electrically connected to a plurality of respective magnets 0M1, CM:, CM:, and 0M4 forming part of a circuit maker and breaker mechanism designated in its entirety at 20. The common contact her I4 is connected through a pair of contacts 33 to a coding mechanism designated in its entirety at III, the function of which will be fully set forth hereinafter.

; The tape perforating mechanism cludes tape perforating dies 22 and cooperating punches 24, the movements of which are controlled by means of magnets MCI, M02, MC! and M04. A pair of additional magnets M03 and MCD are provided for the purpose of advancing the tape T through the apparatus and for applying drive hole perforations to the same, respectively. The magnet M08 is adapted upon energization thereof to actuate a ratchet controlled tape driving drum 28, while the magnet MOD is adapted upon energization thereof to operate a punch 28 which cooperates with a pair of dies 22. The various magnets just described are electrically connected to the coding mechanism 30 for control thereby and the common return wire or line for the magnets is connected through a pair of contacts 34 to the circuit maker and breaker'20, from whence the line may, under certain conditions, extend to ground as at 80. As stated above, the circuit connections between the coding device 30 and the various magnets at the perforating mechanism 40 are similar to the circuit connections shown inthe above mentioned apparent immediately.

, either of the two common lines leading from the sensing" mechanism or the perforating mechanism may be opened while the other remains closed in order that, upon actuation of a spacing key at the keyboard, the tape in either one or the other of these two apparatus may manually be advanced.

.The sensing mechanism Referring now to the drawing in detail, the

sensing mechanism is designated in its entirety at I. and is more or less conventional in its de- The coding mechanism The coding mechanism 30 includes a series of magnetsMl, M2, M3, M4, M5, M6, M1, M8, M2 and M0, each magnet being provided for the pur- 'pose of controlling one or more of the magnets taneoushr together circuit connections leading to Y cooperate with represented by one. or more perforations going sensing in the sensing apparatus Ill does pressed key.

i series of .limit stops or stop thereon adapted upon movement of the bar from upon energization of the magnet and, when grounded,

under normal circumstances will become wenergized simulwith the magnet MCS to adin order that these two magnets vance the tapes T and T Inaddition to the conventional coder circuits, set forth above, the coder-30 is provided with CM-I, CM'2, CM3, and CM4,,-associated with the circuit maker and breaker 20. The magnets CMI. CM'I; M2, CM'Z; CM3, CM'3; and 0M4, CM'l, are arranged in the circuit maker and breaker mechanism in series, the magnets of each pair cooperating with each other to control various circuits, which will either permit the commonline leading from" the perforating mechanism 40 to extend to ground at 35, or which will open this line. These various pairs of magnets also each other to establish or open the common line leading from the tape advancing magnet BM in the sensing device Hi.

The keyboard The keyboard II is also generallyo'f conventional design and includes a plurality of depressable keys Kl, K2, K3, K4, K5, K6, K], K, K! and K0, adapted upon depression thereof to permit energization of the respective magnets Ml, M2, M3, M4, M5,.M6, M1, M8, M9 and MD from the battery B. The keyboard also includes a depressable key KS adapted upon depression thereof to permit energization of the magnet MS? from the battery B.

A .mechanical locking device, which is electrically-controlled, is provided for the purpose of preventing depression of any of" the keys whenperiodically in unison.

a series of magnets ground. The only energized.

which is controlled by the magnet CM'I, to I r v condition. under which the above described circuit maybe closedjobtains when all of the various recited contacts are closed; and this condition is predicated upon the fact that all of the various magnets remain un- A second path through the circuit maker and breaker exists whereby the common'flinejc may be conducted to the ground at. *This second path exists only' at such 'a' time as one or. more of the pairs of magnets existing in the circuit maker and breaker are energized together ever a condition obtains wherein the numeral undernot agree with the numeral represented by a de- Thi mechanical locking device is.

fingers 4| provided a retracted position to an advanced position to be projected from a position wherein they are out of the path of movement of the various keys to a position where they are in the path of movement of these keys. Movement of the bar 42 is controlled by means of a locking magnet LM, the armature 6 of which is operatively connected to the locking bar. Two pairs of normally open contacts 48 and 50, and a single pair of normally closed contacts 52, are adapted to have their respective conditions of opening or closing-reversed LM for purposes that will become apparent shortly.

The circuit maker and breaker apparatus As previously stated, the circuit maker and breaker apparatus 20 includes four pairs of cooperating relay type magnets which have been designated previously as CMi, CM I; 0M2, CM'2; CMI, CM'3; and CMl, CM'I. The common re-' tum wiresleading from the various magnets of the perforating mechanism 40 and sensing mechanism lO are designated at a and b respectively, the common connector 6 for both these lines may pass through a plurality of normally closed contacts 20 arranged in series, the first contact being controlled by the magnet CM'l, the second contactbeing controlled by the magnet CM, the third contact being controlled by the magnet CM'3. .the fourth contact being controlled by the magnet 0M3, etc., and the circult passing from the last pair of contacts w,

log device 30,

'ditions' existing at the latter device.

' magnets CM the magnets CM3 and CMl not to be conditions, the z through the contactsw controlled by the mag- ,tacts a; controlled by the magnets and the remaining pairs, if any, are deenergized. This second path. for the line a to ground exists by virtue of additional normally open pairs of contacts designated at 1:, arranged in series. If, for example, the magnets CM4 and CM'l are both energized and the remaining magnets of the circuit maker and breaker are the line 0 will be connected through the contacts 1:, controlled by these first mentioned magnets, and through the various contacts w, controlled by the remaining magnets, to ground at 36. Thus, the line a will find its ground at 3 whenever both magnets of one, two, three or all the pairs of magnets existing in the circuit maker and breaker apparatus are energized and both magnets of the remaining pairs are deenergized. The onlytime when the line 0 willbe opened is when one magnet of'any one pair is energized and the other magnet thereof is deenergized;

Since the magnets CMI, CM2, CM3 and-CM are controlled according to the selected code by the sensing mechanism l0, and since the-magnets CM'I, CM'Z, CM'3 and CM'lar identically controlled, according to the same code, by the codit .will be apparent that condiat the former device must parallel the con- In other words, for example. if a character representing the numeral 5 is undergoing sensing in the device l0 and, according to the selected code, the magnets *CMJ- andCMZ are energizedwhile the magnets CM; and CM are not energized, the only condition obtaining which will permit the I and CM! to be energized and energized will be when the key K5 in the keyboard 20 is depressed and the circuit connections controlled by the magnet M5 in the coding mechanism '30 are closed accordingly. Under these tions nets CM, CM! and 0M3, CM'3, and the con- CMZ, CM'2 and CMi and CM I.

It has been explained above how'the may or may not find a path to ground through the circuit maker and breaker mechathe condition" of the various magnets associated with this mechanism. The mechanism also includes a similar set of contacts similarly arranged electrically, and des-.

ignated at 11 and 2 respectively, whereby current leading through a lfne d from the positive side of the battery B may or may not find a path to ground at 31 through the pair of con acts 52 and locking magnet LM. The contacts 11 are'normally closed. while the contacts .2 are normally open, and it is deemed unnecessary to enter into a detailed description of the manner in which these latter contacts 1! and z are controlled by their'various operating. magnets; It is sufllcient to state that whenever a condition all deene'rgized,

exists in connection with any one of the pairs -lished. A converse condition exists whereby whenever continuity is not established for the line a through the contacts w or 1:, as the case may be,-continuity will be established through the contacts .11 and a, as the case may be, to ground at 3]. When such continuity is'established, the magnet LM' will become energized and the bar 42 will be shifted to a position. where in the various depressable keys of the keyboard 2| become locked so that they may not be depressed. I

Simultaneously, with the energization of the magnet LM the pair of contacts '52 will become opened, thus breaking the magnet circuit. The magnet LM will remain energized, however, inasmuch as the normally open pair of contacts 48 will become closed and current will follow a path from the battery B, through a pair of normally closed contacts 54, through the contacts 48 and magnet LM, to ground at 31: The pair 01' contacts 50, which are also controlled by the magnet LM, will, upon becoming closed, cause a lamp L to become lighted through a series arrangement of contacts v controlled by the magnets CMI, M2, 0M3 and 'CM4 0'! the of. Under these conditions, the keys operate in their normal manner to control the operations oi the tape perforating mechanism Mi. It, is to be noted, however, that inasmuch as the common return line b of the sensing mechanism I0 is connected through the pair of contacts 56 to ground at 4| the tape T will be periodically advanced in synchronism with the tape '1". Under other conditions of operation-it may be desired to employ the apparatus solely as a tape perforating device without advancing the tape T in thesensing" mechanism 10, and under such circumstances a switch S3 may be employed to permanently open the pair of contacts 33. A switch S4 is provided for controlling the contacts 84 when it is desired to space the tape T without spacing the tape T.

It is thought that from the above description the nature, operation and many advantages 0! the herein described duplication verification apparatus will be apparent. While there has been v shown and described and pointed out the i'undamental novel features 01 the invention, as applied to a single modification, it will be understood that various omissions and substitutions and changes in the formand details 01' the device illustrated, and in its operation, may be made by those skilled in the art without departcircuit maker and breaker 20, current for the a lamp issuing from the battery B and passing through these lattercontacts and the contacts 50 to ground at 39.

' The circuit maker and breaker by-puss mechanism Under certain circumstances, it may be desired to utilize the apparatus solely for manual tape perforating purposes and in such instances the sensing mechanism I II, for sensing the original recorded data, and the circuit maker andbreaker mechanism will not be required. Toward this end means are provided for permanently connecting the common return line b of the magnet DM in the sensing mechanism ID to ground at 4! through a pair 01' normally open contacts 56 controlled by a by-pass magnet BPM. The magnet BPM is adapted to become energized from the battery B through a manually controlled switch 8, which, upon becoming closed, allows current to fiow through a pair of normally closed contacts 58 to the magnet RPM and from thence through a pair of contacts 60 to ground at 43.

energized, an additional pair of contacts 84 Y become closed for the purpose of energizing a lamp L', which'is preferably of a color difierent from the color of the, lamp L. The normally closed contacts 54 will, upon energization of the magnet BPM, become opened, thus breaking the locking circuit extending through the contacts 52 01' the magnet LM, in order that the shiftable bar 42 will be moved in such a direction as to free the keyboard of its locking effect ing from the spirit of the invention. The invention, therefore, is to be limited only as indicated by the scope oi the following claims.

What is claimed is:

1. In an apparatus of the character described, a circuit making and breaking device comprising a pair of magnets, a normally closed contact for each magnet operable upon energization of the magnet to become opened and a circuit under the control of said magnets leading through the pair 01' contacts in series.

2. In an apparatus of the. character described, a circuit making and breaking device comprising a first series of magnets and a second series of' of each pair of magnets in series and through the contacts of the successive pairs in series.

3. In an apparatus 01 the character described, a circuit making and breaking device comprising a first series of magnets and a second series of magnets, said magnets being arranged in pairs and each pair including a magnet in the first series and a magnet in the second series, a normally closed contact for each magnet operable upon energization of the magnet to become opened, a normally open contact for each magnet operable upon energization of the magnet to become closed, and 'a pair of circuits under the control of said magnets, one of said circuits extending through the pairs 01' contacts of each pair of magnets in the series and through the contacts of the successive pairs in series, 'and the other circuit leading through the other pairs of contacts of each pair of magnets in the series and through said other pairsof contacts of the and permit actuation of the various keys theresuccessive pairs in series.

4. In an apparatus of the, character described,

a circuit making and breaking device comprising I a first series of magnets and a second series of. magnets, said magnets being arranged in pairs and each pair including a magnet in the first series and a magnet in the second series, plural pairs of contacts for each magnet under the control thereof and a plurality of circuits under the control of said contacts leading through the respective pairs of contacts of. each pair of magnets in the series and through the respective pairs of contacts through the successive pairs in series.

5. In an apparatus of the character described, a circuit making and breaking device comprising contact for each magnet operable upon energization'of the magnet to become opened and a circuit under the control of said. magnets leading through the pairs of contacts of each pair of magnets in series and through the contacts of the successive pairs in series.

6. In an apparatus of the character described,

a circuit making and breaking device comprising a first series of magnets and a second series of magnets, said magnets being arranged in pairs and each pair including a magnet in the first series and a magnet in the second series, means for selectively controlling the energization of the magnets of the first series, separatemeans for selectively controlling the energization of the magnets of the second series, a normally closed contact for each magnet operable upon energizatlon of the magnet tobecome opened and a circuit under the control of said magnets leading through the pairs of contacts of each pair of magnets in series and through the contacts 'of the successive pairs in series, and means for causing said circuit to by-pass said magnets.

I. In a verifying apparatus for-verifying per-' forated data on. a first record media produced from original data in corrected form on a similar second record media, an analyzing device adapted to sense perforations in the index positions of the first record media including circuits adapted to be completed under the control of said sensing means upon sensing one or more perforations in a column, a perforating mechanism for perforating corrected data on the second record media, a keyboard having depressable keys for controlling the perforating mechanism including circuits adapted to be completed under the control of said keys, means operable from said keyboard for advancing said first record media through the analyzing device and the second record media through the perforating mechanism simultaneously, and means under the Joint control. of said circuits for rendering the perforating mechanism inoperative when the perforations undergoing sensing in the analyzing device difier from the keys depressed at said keyboard.

8. In a verifying apparatus for verifying perforated data on a record media produced from original data incorrected form on. a similar second record media, an analyzing device adapted to sense perforations in the index point positions of the first record media including circuits adapted to be completed under the control of said sensing means upon sensing one or more perforations in a column, a perforating mechanism for perforating corrected data on the second record media including a series of punch operating magnets and punches therefor, a keyboard having depressable keys for controlling said magnets ineluding circuits leading from the keyboard to the perforating mechanism and additional circuits adapted to be completed under the control of said keyboard, and means operable upon completion of said analyzing device circuits and said keyboard circuits forrendering said perforating mechanism inoperative when a character undergoing sensing in the analyzing device differs from the keys depressed at said keyboard.

'9. Ina verifying apparatus for verifying per-f forated data on a record media produced from original data in corrected form on' a similar second record media, an analyzing deviceadapt'ed to sense perforations in the index point'positions of the first record media including circuits adapted to be completed under the control of said sensing means upon sensing one or more perforations in a column, a perforating mechanism for.

perforating corrected data on the second record media including punch operating magnets and punches therefor, a keyboard having depressable keys for controlling the perforating mechanism including circuits connecting the keyboard and perforating 'mechanism, additional circuits adapted to be completed under the control of said keyboard, a common terminal circuit for-said magnets and means operable upon selective completion of the analyzing device circuits and 'said latter keyboard circuits for breaking said 'common terminal circuit when a character undergoing sensing in the analyzing device difiers from the keys depressed at said keyboard.

10. In a. verifying apparatus for verifying perforated data on a record media produced from original data in corrected .form on a similar second record media, an analyzing device adapted to sense perforations in the index point positions of the first record media including circuits adapted to be completed under the control of said sensing means upon sensing one or more perforations in a column, a perforating mechanism for perforating corrected data on the second. record media including punch operating magnets and punches therefor, a keyboard having depressable keys for controlling the perforating mechanism including circuits connecting the keyboard and perforating mechanism, additional circuits adapted to be completed under the control of said keyboard, a common terminal circuit for said magnets, means operable upon completion of the analyzing device circuits and said latter keyboard circuits forbreaking said com-' mon return line when a character undergoing sensing in the analyzing device differs from'the keys depressed at said keyboard, said means comprising a series of magnets selectively operable under the control of said sensing device and a second similar series of magnets operable under the control of-said keyboard, said magnets being arranged in pairs, and a pair of normally closed contacts associated with each of said latter magnets and arranged in series, said common return line normally extending through said latter contacts in succession.

"11. In a verifying apparatus for verifying perforated data on a record media produced from original data in corrected form on a similar second record media, an analyzing device adapted to sense perforations in the index point positions of the first record media including circuits adapted to be completed under the control of said sensing means upon sensing one or more perforations in a column, a perforating mechanism for perforating corrected data on the second record media including punch operating magnets and punches therefor, a keyboard having depressable keys for controlling the perforating mechanism including circuits connecting the keyboard and perforating mechanism, additional circuits adapted to be completed under the control of-said keyboard,'a common terminal circuit for said magnets, means operable upon completion of the analyzing device circuits and said latter keyboard circuits for breaking said common return line when a character undergoing sensing in the analyzing device differs from the keys depressed at said keyboard, said means comprising a series of magnets selectively operable under the control of said sensing device and a second similar series of magnets operable under the contro. of said keyboard, said magnets being arranged in pairs, a pair of normally closedcontacts associated with each of said latter magnets and arranged in series, said terminal circuit normally extending through a pair of contacts associated with one of said magnets and from thence through a pair of contacts associated with the other magnet with which it. is paired and from thence through the contacts of each pair of magnets successively.

12. In a verifying apparatus for verifying perforated data on a first record media produced from original data in corrected form on a similar iorating mechanism simultaneously, and means under the Joint control of said sensing mechanism and the keyboard for rendering said perforating mechanism inoperative when 'a character undergoing sensing at said index positions of the analyzing device does not correspond with the operation of the keyboard.

13. In a verifying apparatus for verifying perforated data on afirst record media produced from original data in corrected form on a similar record media, an analyzing device adapted to sense perforations in the index positions of said first record media including a plurality of circuits adapted to be completed under the control of said sensingrneans upon sensing one or more perforations in a column, a perforating mechanism for perforating corrected data on the second record media including perforating magnets having a common return circuit for the .magnets, a coding mechanism including magnets having relay circuits'under the control of said magnets, a circuit making and breaking device including a first series of magnets selectively energizabie under the control of said sensing brushes .and a second series of magnets energizable under the control of said relay circuits, said magnets being arranged in pairs and each pair including a magnet in the first series anda magnet in the second series, a normally closed ochtact for each magnet operable upon energisation of the magnet to become opened, said return line being under the control of said circuit maker through the successive pairs in series.

WILLIAM J. A. rmoo mmesmr. 

